The principle of statistical process control is introduced and the damage identification process using Xbar-R chart is derived.
介绍了统计过程控制原理，推导了均值极差控制图进行结构连 续损伤识别的过程；
2
Use Xbar and R charts to discover the factors that contribute to process variability. Shewhart charts cannot ensure against accepting poor or recallable lots.